Blue-printing apparatus.



R. HERMAN.

BLUE PRINTING APPARATUS,

APPLICATION FILED IAN. 1s, 1909.

966,01 6. Patented Aug 2,1910.

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BLUE PRINTING APPARATUS.

APPLIOATION FILED umm, 1909.

Patented Aug. 2, 1910.

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R. HERMAN.

BLUE PRINTING APPARATUS.

APPLIOATION FILED JAN. 1a, 1909.

966,016-, Patented Aug. 2,1910.

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R. HERMAN.

BLUE PRINTING APPARATUS.

APPLICATION FILED IAN. I8.. 1909.

966,01 6. Patented Aug. 2, 1910.

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REINI-IOLD HERMAN, OF GRAFTON, PENNSYLVANIA.

BLUE-PRINTING APPARATUS.

Specification of Letters Patent.

Patented Aug. 2, 1910.

Application filed January 18, 1909. Serial No, 472,844.

To all whom it may concern:

Be it known that l, REINHOLD HERMAN, a citizen of the United States of America, residing at Grafton., in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvement-s in Blue-Printing Apparatus, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to blue printing apparatus, and has particular relation to the type preferably using' an electric lamp as the source of light.

Heretofore, devices of this character have been employed of two general classes, viz (a) an apparatus in which the lamp is held stationary, the current thereto being controllable for the purpose of retaining the light in operation a predetermined period of time, and, (b) an apparatus in which the lamp is givena movement parallel with the plane of the print operated upon, the movement, in some cases, being of a predetermined length. In cach of these cases, means have been employed for automatically cutting out the lamp at a predetermined time. liVhile each of these classes of cases is substantially competent to perform the particular function desired of them, their use is limited solely to particular classes of work; for instance, in cases of the first class, the size of the print to be made is limited for the reason that the effective zone of light limited unless the lamp itself be of a size sullicient to impartthe light rays to all parts of the printing frame, in which case, an excessive amount of current is required when the print to be .made is of a small size; where the lamp is movable, it is possible to give all parts of the printing frame thel necessary light, but in such cases, the lamp not having provision for being held stationary at a predetermined point in the path of travel, and especially where the print is small and the drawing which is being printed is contained on a relatively heavy thickness of paper, the necessary time intervals required to give the maximum amount of light is not obtainable. lu order, therefore, that all classes of work may be blue-printed with success, it has heretofore been essential that the establishment be provided with each class of machines, thereby making the cost of apparatus excessive, since certain classes of work could be made b v either class of machines, but neither is capable of producing all classes of work.

The present invention aims to overcome these objections by providing an apparatus which will provide either a moving exposure or what may be termed a time exposure, viz., an exposure in which the source of light (the lamp) is held stationary.

The invention therefore has for its main object the provision of an apparatus in which the lamp may be given the movement across the face of the print, or be held stationary at any predetermined point, the electric circuit for the lamp being controllable with either form of operation.

.Another object of the invention is to provide, in an apparatus of this character, a timing meansl for controlling the period of exposure in either form of operation of the apparatus.

A further object is to provide a timing means, operative by either the lamp or a weight, for controlling the exposure, said operating means being operative independently of each other.

A further object is to provide a timing means for controlling the period of exposure of the lamp regardless of whether the latter is operating to provide a movable exposure or a stationary exposure, said means forming the stop mechanism for the movement of the lamp when the latter is providing the moving exposure.

A further object is to provide an adjustable connection between the timing means and the lamp carrying support by which a positive movement will be given to the timing means by the movement of the lamp when the apparatus is being given one form of operation, and which connection is broken without affecting the operation of the timing means when the apparatus is used in the other form of operation, the timing means being in active operation during the period of exposure with either form of operation.

A further object of the invention is the provision of improved means for connecting the lamp cables in the electric circuit.

A further object is the provision of a novel supporting means for the lamp whereby the usual point of connection of the cable and lamp is freed from the strain of the lamp support.

A further object of the invention is to provide an apparatus of this character in which the lamp, its controlling mechanism, and the printing frame are directly carried by the supporting frame.

A further object of the invention is to provide in an apparatus of this character, a

supporting frame positively held against movement relative to the printing frame, said supporting means carrying the lamp in a manner to normally tix the position ot' the lamp relative to predetermined portions ot the printing trame, novel means being provided for preventing swinging movement of the lamp in a rotary direction to altect the position ot the lamp relative to said predetermined portions.

further object oi: the invention is the provision ot' an apparatus ot this character which permits ot a complete assemblage of parts in their proper relationship prior to being boxed ttor shipment, and which can therefore be shipped in a condition ready to be operated upon removing the crating and comiecting up the circuit connections, the parts being so formed and positioned as to permit required preliminary adjustments, etc., which will remain unchanged in shipment except under handling such as would substantially destroy the apparatus.

Minor objects of the invention are to provide various mechanical improvements in the construction ot' the ditlerent parts of the apparatus and their manner of interconnection so as to produce an apparatus which is efficient, durable, of comparative low cost, and simple in operation.

To these and other ends, the nature of which will be understood as the invention is hereinafter disclosed, my invention consists in the improved construction and combination of parts hereinafter fully disclosed, illustrated in the accompanyingl drawings, and particularly pointed out in the ap pended claims.

In the accompanying drawings, in which similar ret'erence characters indicate similar parts in each ot the views-Figure l is a front elevation ot a blue printing apparatus constructed in accordance with my invention. Fig'. 2 is a side elevation of the same. F ig. 3 a horizontal sectional view taken on line 3 3 of F l, and showing the lamp cable supporting means and the circuit connections by means of which the currenttollows to the lamp. Fig. s is a front elevation ot' the structure shown in Fig. 8. Fig. 5 is a horizontal sectional view taken on line 5&5 of Fig. l, and showing in plan view the mechanism for changing the operation from the moving lamp to the stationary lamp or vice verst. Fig. 6 is a front elevation ot' the construction shown in Fig. 5. Fig. 7 is a view in elevation of the upper portion of the lamp, the sheaves for the lamp cables, and the connector Jfor the lamp and its cables. Fig. 8 is a view taken at right angles to Fig. 7, a portion of the connector being shown in section. Fig. 9 is a top plan view of the connector and showing the lamp cables in section,`r the section being taken on line 9-9 oi Fig. S. Fig. l() is a horizontal sectional view through the upper rack and through the sleeve, and showing the sleeve and rack connecting member in operative position, said view also showing the tinger carrier for cutting out the current to the lamp. Fig. ll is a vertical sectional view showing the stop mechanism for limiting the downward movement ot the lamp.

The complete iipparatns in Figs. l and Q consists of the print-carrying frame, including the apron, the supporting trame, the lamp, and the lamp controlling mechanism, said latter mechanism including the means tor controlling` the movement of the lamp and the means for controlling the period ot exposure ot the lamp. Ot these particular constructions, the print-carrying trame and its apron is not specili ally shown and described herein in detail, as the saine lorms the subject-matter ot a separate application, and while the specilic construction ot the supporting :trame is disclosed herein to some extent, this structure is not specifically claimed herein as it also forms the subjectmatter of a separate application. Nor do l disclose or claim the specific structure ot the piston-cylinder or of the switch mechanism, as the former is substantially disclosed in Letters-Patent ganted to me December 123, i90-l, No. 777,096, and the'latter is oit the type shown in Letters-Patent granted to me November 1903, No. 719,160.

The main or supporting trame ot my ap- )aratus consists of two vertically-exteluling bars 20 located on diametrically-opposite sides ot the printing trame, said bars having their' upper ends curved inwardly, as at 2l,

to torni a meeting point located in approximate alinement with the axis of the printing tramev` being connected by a casting Q2 which overlaps the meeting ends and is secured to both bars. as indicated in Fig. 7. The lower end of each ot the bars 20 is provided with laterally-extending feet Q3 to provide the equivalent ot an expanded base to the bar. The bars may have any desired cross-sectional coniiguration, but l preterably make use of angle-iron tor this purpose, as such form lends itself to the torination oi an extremely durable and compact. structure. as will be presently described. A preferred configuration ot bar is shown in Figs. 3 and Adjacent the lower ends ot the bars Q() I secure the lower ring` 2l ot the printing trame, said ring being` secured to the bars in suitable manner. The upper ring ot' the printing 'frame is also secured to the bars Q0, but for the purpose ot permitting ot a ready placing in position ot the glass. said ring is not secured in position until a'lter the glass has been mounted. said ring being slid vertically on said bars to permit ot' the insertion of the glass, the bars having their vertically extending portions continued above the normal plane of the ring 25 to permit the latter to be raised during the insertion of the glass. The rings E24 and 25 are also preferably formed of angle-iron.

The printing frame, brieiiy stated, consists of the rings 24 and 25, the glass sections, and the spacing members 100 which form the closures between the vertically opposing edges of the semicylindrical halves or sections of the cylinder 101. The spacing members have their vertical edges recessed longitudinally of the members, the recesses being preferably of a width greater than the thickness of the glass, and which recesses receive suitable strips 10Ql of felt or its equivalent material for the purpose of cushioning the edges of the glass in the cylinder. The rings 24 and 25 are each provided on diainetrically opposite sides with projecting portions adapted to fit the bars 20, as shown in F 3 and said portions being preferably arranged to aline with the spacing members 100, thereby placing the blind portions in the cylinder, formed by the spacing members, in alinement with the bars 2O and enabling the lamp to be accurately positioned to provide movements thereof in which the zone of the obstructed light rays, due to the presence of the frame of the lamp, will be positively fixed, the blind portions of the light rays and the similar portions of the cylinder thereby being in accurate alinement as hereinafter disclosed.

QG designates the apron, the structure of which and its operating mechanism is not specifically set forth herein, as heretofore set forth.

1n order that the controlling` mechanisms for the lamp may be more readily understood, l will iirst describe the manner in which. the lamp is supported from the frame and in which it is connected in the electric circuit.

Deferring first to Figs. 3 and 4, 27 designates a bracket secured to one of the bars 520, said bracket having wings 2S extending on opposite sides of the bar 20, each of said wings having an opening 29 to receive a brush holder, an insulating collar 3l being interposed between the holder and the bearing. The central portion ofsaid bracket is extended outwardly, as at 32, the extension being in two spaced parts substantially duplicated and terminating in bearings 33 spaced apart a greater distance than the two parts of the extension, said bearings 33 being adapted to support a shaft 34 extending therethrough. Mounted on the shaft 34,

on the outer sides of the bearings 33, are two sheaves 35, 35a, said sheaves being secured to and deriving movement from said shaft in any preferred manner.

The sheaves 35 and 35a, with their cooperating parts, are substantial duplicates in construction, and 1 will therefore describe, in detail, the structure in connection with the sheave 35. The sheave 35 has its periphery formed with an annular depression in which is secured an insulating bushing 37 also formed with. an annular depressed portion to receive the strands of an insulated lamp cable 33 having one end passed through a radial opening 39 formed in the bushing 37 and the rim of the she-ave, (the opening in the latter being insulated) and suitably secured in position on a screw 40. 'l`o enable the bushing 37 to be placed in position the sheave 35 is formed with a detachable side face 350, held in position by suitable screws, as shown in 4. The opposite end of the cable 3S is carried over a sheave 41 (Figs. 7 and 3) carried by a bracket 4'2 formed on the casting 22, and secured to the proper binding screw of the lamp. To prevent liability of grounding the electric circuit on the frame through the sheave 41, said sheave is provided with an annular insulating bushing within which the cable is located.

l or the purpose of preventing liability of the cables being withdrawn from their connection with the lamp, 1 provide a supporting device which is best illustrated in Figs. 7, S and 9. This device comprises a bar 44 having its ends split or bifurcated, as at 45, each end being` provided intermediate the ends of the bifurcations with an enlarged opening 4G to receive an insulated bushing 47, which also is split longitudinally on one of its sides and provided with a head 43 which normally rests on the upper face of the bar 44. A bolt 49 extending transversely of the bar adjacent each of its ends, serves as a clamping member to provide pressure on the split insulating bushing 47. i suitable hook 50 has its shank extending vertically through the bar 44 at its center, said hook being adapted to be removably engaged with an eye formed at the upper' end of the lamp.

rlhe supporting of the lamp by means of the bar 44 is obtained by permitting the bifurcated ends of the bar to be opened by the release of the bolts 49 and the insertion of the insulating bushings 47 into the openings 46, the bushings being passed over the lables. The hook is then inserted in its eye and the cables connected to their binding posts on the lamp. rllhe bar is then moved along the cables until properly positioned thereon. to take all strain off of the end of the cables, after which the bolts 49 are tightened, placing the grip of the bushings 47 on the cables a distance extending the entire length of the bushings. By this construction, not only is the weight of the lamp removed from the point of connection of the cables and lamp, but in addition, the bar and insulating bushings form positioning members for the cables which prevent the latter from being swung out of the sheaves `l-l, and prevent a rotatory swinging' of the lamp during its downward movement. This latter of especial advantage for the reason that in an apparatus of this type, there are necessarily what may be termed blind portions to which the iight rays cannot pass, owing to the presence of the frame of the lamp obstructing the rays of the arc. By retaining the lamp against a swinging movement in a rotary direction, these blind portions are positively fixed. ln view of the fact that thc-se blind portions are alined with the vertical bars Q0, the particular arrangement of the upper ends of these bars and the mounting' of the shaft 4l, provides, with the steadying-etfect of the three-point connection of the cables and lamp, a positive retaining-means for holding the lamp-frame alined with such blind portions, and thereby permitting all the remaining portions of the printing' frame to be used for printing purposes without liability of obstructing the light rays at any point. 4

From the above description of parts, it will be understood that the cables from which the lamp is supported are wound around the sheaves 35 and 35a and have their sheave ends secured to a .screw carried by the sheaves, and that a rotative. movement of the shaft 3i will wind or unwind the cables from the sheaves 8T and 535'"L according to the direction in which the shaft is being rotated.

rhe circuit connections by means of which the current supplied to the lamp through the cables 3S, are follows: The sheave is provided in its web with a bearingl 5l, and within said bearing is located an insulating' collar through which the screw ieretofore referred to, is passed. the outer end of said screw being` adapted to receive a threaded-extension 53 formed on a rotary circuit connector or collector' ring 5t mounted on a collar 55 formed of insulation and located on the shaft 3. For the purpose of insulziting the extension 53 from the sheaves 35, the insulating collar 52 projects beyond the face of the bearing .31; the end of the cable is located between said projecting portion of the collar and the extension 58, heilig clamped in position by the action of the screw Je() in placing` the connector 5t in proper position. The brushholder 30. which provides the connections between the binding posts for the wires from the line to the connector at, comprises a shank 5o located within the collar Bl and having a projecting' portion 5T which is recessed longitudinally to receive a brush 5S, of suitable type, and an actuating spring' 59 which serves to retain the brush in contact with the face of the connector -t. The free end of the shank 5C is provided wit-h screw threads to receive two nuts G which serve to clamp the wires for the circuit connections, a brass washer being' interposed between the inner nut and the insulation. it will be understood that as the shaft 3st is rotated, as hereinafter described, the connector 5J.- moves therewith, and, through the brush and brush holder with its binding post, forms a part of the circuit connections for supplying' the lamp with current.

For the purpose of clearly distinguishing the parts carried by or cooperating with the sheave from the similar parts in connection with sheave the parts are designated as follows: the lamp cable 38"'5 sheave, thg binding post or screw, 401; rotary circuit connector. til-g lnnsh-holder, 30"; brush 58, and nuts (01.

rthe circuit, which is best illustrated in Figs. l and 2, includes the following: Gl a diagrammatic representation of the source of electrical supply and (32, an automatic switch having switch contact clips (33 and (Se. lts shown in Fig'. 2, the circuit passes from source 6i to the switch contact clip (323, tlnfough the sector of the switch, to the switch contact clip (ist, and thence to the brush holder 30 and brush 5S. From the brush it passes to the rotary circuit connector 5st and binding post or screw 40, from which it passes to the insulated cable 53S carried b v the sheave $35, through said cable (the latter passing over sheave ttl) to the lamp. The return circuit passes from the lamp to the cable BSH (the latter passing over sheave tid), through said cable, over sheave 525", to the binding post or screw tOi", carried by the circuit connector 5st, through said connector' to brush 581, and brushholder 30 to the source of supply Ul. it will now be understood that when the switch 32 is set to complete the circuit. a complete circuit will be formed through the lamp which circuit will be continued regardless of the movements of le cables and their sheaves, and will continue until the switch has been operated to break the circuit.

its heretofore stated, the autonnitic switch structure is not herein shown and described in detail. it being' preferred to use the structure disclosed in Patent No. 'T-tIJGO, above referred to. it will therefore be suilicient herein. to state that the switch is in the form of a member having a partial pivotal movement which will bring an extension or sector thereof into or out of engagement with both contact plates of the circuit eon nection, said member being under spring tension and having a notch within which is received a pawl carried by a tripping lever,

having a limited pivotal movement, said lever, when tripped, releasing the pawl and permitting the spring to rotate the member and break the circuit. For the purpose of clearness, I have designated the tripping lever as G5, the stop tor limiting the movement oit 'the lever being designated as As heretofore pointed out, the apparatus is intended to provide ior either oit two terms ot lamp exposure, viz: by a movement oit the .lamp within the printing trame or by retaining the lamp at a stationary position within the trame. These operations are controlled by certain operating elements which, in one operation, are in conjunction, and in the other operation are separated. i? or the purpose of explaining these operations, i will tirst describe the construction ot parts and their operation when used in conj miction to permit movemeiit of the lamp to carry it through the printing iframe tor the j nirpose ot making the print,

(36 designates a cylinder having a piston (S7, said cylinder having its lower end pivoted to a bracket 68 located adjacent the bottom oit the bar 20, this form of mounting providingl tor an accurate alining of the connections presently described, during the operation ot the device. rlhe particular cmistruction ot cylinderI and piston is not herein described, the structure thereof, as heretofore pointed out, being et suitable character, such for instance as shown in the @Patent I' 777,036 above set forth. Itmay be noted that the structure is arranged to permit ot a controllable passage of tiuid through by-passes formed in the piston, in order to control the rapidity ot movement ot the piston in either direction, the piston being adjustable to control the passage of tlnid.

lfixedly connected to the end of the piston is a rack-bar (S9 which extends vertically a suitable distance, and at its upper end is ctmnected to a sleeve 70, which, in turn, is adapted to receive the lower end of a rackhar 7l. ihe rack-bar 7l is adapted to engage with a pinion 72 mounted on the shaft '-i between the bearings 32, said rack-bar being held in engagement with said pinion by means of a roller 73, as best shown in iiig. 3. The rack-bar 7l is et a size in cross section to loosely lit the sleeve 70, said sleeve haring one ot its taces provided with a longitudinally-extending slot 74. Adjacent the lower end oit the rack-bar 7l, the same is provided with a screw-threaded opening 75, 'which is adapted to receive a screw-threaded sind 76 having a handle j n'ojecting through the slot '74-l ot the sleeve, said stud having its inner end reduced and` free from screwthreads. lThe sleeve 70 is provided approximately central oit its length with an opening 'ZT positioned and ot a size to receive the reduced end. of the stud 7G when the stud and opening are in alinement, the engagement being obtained by the rota-ry movement ot the stud.

78 designates a bracket secured to the bar 20, and having a coniiguration such indicated in F ig. 5, said bracket having suitable bearings to receive a shaft 79 on which is mounted a pinion 8O tast on the shaft and adapted to engage the rack-bar 69 which passes vertically through an opening in the bracket 78. To retain the rack-bar 69 against lateral movement and in contact with the pinion 80, I provide a roller 8l, which rides against the rear tace of said rack-bar. While the shaft 79 carries other parts which will be presently described, movements ot the pinion in the operation now to be described do not materially aii'ect the parts carried by said shaft, the parts being so arranged that in this operation, the pinion acts mainly as a guide for retaining the rack-bar in alinement with the remaining parts forming the connection between the cylinder and the lamp-supporting sheaves.

lilith the parts connected in the manner thus described, a release of the lamp from its position-retaining means, places the weight et the lamp on the cables and causes them to rotate the sheaves and 35 which in turn communicate motion to the shaft Set and pinion 72. The .movement of pinion 72 causes an upward movement of the rackbar 71, and by reason of the connection or" said rack-bar with the sleeve 70 through the stud 76 engaging the opening 77, causes the sleeve to move as an integral part of the rack-bar 7l, said sleeve in turn drawing on the rack-bar 69 and, through the connection of the latter with the piston, placing the movement of the lamp under the control of the controlling structure provided by the cylinder and piston, the rapidity ot movement of the lamp being controlled entirely by the greater or less quantity of fluid permitted to pass through the by-passes of the piston.

The cutting out oit the current from the lamp by the operating of the automatic switch to break the circuit is provided by this movement of the connections. For this purpose, place on the sleeve 70 a collar 85 having a set-screw 86 by means oi which the collar may be clamped to the sleeve at any desired point intermediate the ends of the latter, the collar being best shown in plan view in Fig. l0 of the drawings. Said collar is also provided with a inger 87 which has a path of movement adapted to cross that of the tripping-lever of the automatic switch. rthe movement of the switch to complete the circuit, places the tripping-lever 65 in its proper position; hence, the movement ot the sleeve heretofore indicated will carry the finger S7 into contact with the lever G5 and operate the latter to release the switch and break l the circuit, the movement of the lever (35 being pivotal until contact is made between the lever and its stop a, at which time the lever does not pass out of the path of travel of finger ST, but remains therein to provide a positive stop against further movement of the linger, and, through the connections heretofore noted, to the sheaves 35 and 33a and the lamp. Hence, the movement of the lamp will be stopped immediately' after the circuit is broken, the linger ST and the tripping lever G5 being the particular parts which control this result, and thereby providing cooperating elements common to produce both results. lt will therefore be understood that a single adjustment of the linger ST will control the length otl movement of the lamp through the printing trame, the lowermost position which the lamp can assume during its movement, and the length otl exposure of the lamp.

rl`he mechanism ,tor returning the lamp to its normal position is best shown in Figs. 5 and G and consists mainly of a ratchet wheel SS pinned to the shaft T9, a pawl S9 carried by a projection formed on the bracket TS and adapted to cooperate with said ratchetwheel, a coupling member 90 pinned to said shaft 79, and an operating handle 91 having a tace complemental to the couplingmember. said handle being mounted to move longitudinally ot' the shaftl 'T9 to permit engagement and disengagement ot' the coupling-faces oi'I the handle 91 and coupling member 90.

llvhen the lamp has reached the lowermost position permitted by the finger ST, an engagement ot' the handle 91 with the coupling-member 90 and a rotation of the handle 91 to impart a movement to the pinion SO in the opposite direction will cause the pinion T2 to be rotated in a manner to wind the cables on the sheaves 35 and 35, thereby withdrawing the lamp from the printing frame. During this operation, it is preferred that the controlling mechanism formed by the cylinder and piston be adjusted to permit o1c a relatively rapid movement of the parts.

lt is preferred that the sheaves 35 and 35 be of such siI/.e relative to the pinion T2 as will provide a differentiating-movement between the rack-bar Tl and the lamp in such a manner that the lamp will travel a relative number ot times the distance of travel of the rack Tl during the same period, the parts being' so proportioned that, for instance, a movement of the rack-bar Tl in Fig. l a distance approximately that orn the length ot' said rack will cause the lamp to travel the entire length of the printing frame.

To permit the lamp to be used as a' stationary exposure-element, means must be provided for retaining the lamp in the desired position, and the construction for producing this result will now be explained.

Adjustably mounted on the rack-bai' Tl is a sleeve S2, shown in detail in Fig. ll, said sleeve having a set screw and a follower S3, the latter having a toothed tace adapted to engage the toothed tace of rack-bar Tl, said sleeve being provided with a vertically-extending' projection S4.

When it is desired to use the apparatus with the lamp held stationary within the printing trame, the sleeve S2 is placed at its proper position on the rack-bar Tl and the stud T6 unscrewed until its reduced end is disengaged from the opening TT, thereby breaking the connection between the sleeve T0 and rack-bar Tl, leaving the iack-bar tree to move vertically until the engagement of the projection S-l with the bracket 2T is had. During this movement, the handle ot the stud enables the operator to control the movement of the lamp to prevent accident.

rThe disconnection of the sleeve TO and rack bar Tl, however, eliminates the power tor moving' said sleeve and its circuit breaking linger. To provide this movement of the sleeve TO l mount ou the shaft T9, a shea ve 92 having a laterally-projecting radially extending portion 93 provided with a lonfftudinal opening` within which is located a bolt 9-1- mounted to move longitudinally ot' said opening, said portion 9?) having a .slot 95, the ends oiE which ai'e enlarged laterally, said slot forming a passage-way tor a handle 9G carried by the bolt, the enlarged ends of the slot permitting said handle to be locked at either end of the slot 95. The shaft T9 is provided with a suitable diametrically extending opening (shown in dotted lines in Fig. t3) for the passage of the bolt thereinto.

9T designates a weight, approximately equal to that of the lamp, and which is noi'- mally supported by means ot hooks 9S secured to suitable ears formed on the bracket TS. The weight 9T is connected to the sheave 92 b v means ot' a flexible-connection 99, preterably in the torni of a metallic band. as shown in Fig. 5, the cross-sectional contiguration otl the latter tending` to prevent swinging ot the weight when the weight is released from its supporting hooks.

lVhen the lamp has been positioned within the printing tram as heretofore described, and the circuit breaking linger properly positioned on the sleeve T0, the bolt 9-1- is passed into the opening in the shalit T9, thereby locking the sheave to the shatt. Upon disengagement of the hooks 9S from the weight, the latter exerts its power through the connection 99 to the sheave 92 and the shaft T9, imparting a rotary movement to said shaft. This movement in turn c; uses the pinion S0 to move the rack-bar G9 with the sleeve 70. The rapidity of movement of the weight is controlled by the controlling mechanism formed by the cylinder and piston as in the case where the weight of the lamp forms the power. This movement of the rack-bar 69 and sleeve 70 moves the iinger S7 into engagement with the trippinglever 65, and actuates the circuit-breaker or automatic switch.

Then the connections heretofore described are engaged to provide the operative connection between the sheaves 35 and 3.5 and the rack-bar G9, the lamp is supported in its uppermost position by the pawl and ratchet carried by shaft 7 9. Then the inov-einent of the lamp is to be had, the lever G5 is moved to close the switch 62, the handle 96 disengaged, and the pawl raised, leaving the connections free to move downwardly. Then the winding movement takes place, the pawl is placed in engagement with its ratchet so as to retain the lamp in its raised position. Then the lamp is in its stationary position within the printing frame, the movement of the sleeve 70 is permitted by the disengagementof said pawl from its ratchet; to permit the lamp to be raised to its uppermost position, however, the rack-bar 71 may be lowered (by means of the handle on stud 76,) until said stud alines with the opening in sleeve 70, whereupon engagement is completed and the winding takes place in the usual manner.

Then the weight is being used as the niotor, the Horrible connection is re-wouiid by the handle 91, the same movements of the remaining parts in operative relation with the shaft- 79 having their usual movements.

lt is to be noted that when the apparatus is being used to provide a moving exposure, the sleeve 82 is placed in aosition adjacent the lower end of rack-bar Il, to enable the latter to have free movement.

From the above it will be seen that whether the lamp or the weight provides the actuating means, the breaking of the circuit is performed by the same member through the same controlling means, the only difference in ope 1ation being the provision of an auxiliary actuating device and the disconnection of the lamp from the moving elements without affecting the circuit-connections. The changes required to modify the operations from one class to the other are comparatively slight, consisting simply in adjusting the sleeve 82 on rack-bar 7l, diseiigaging the rack-bar 7l and sleeve 70 by means of the stud 7G, positioning the lamp by the free movement of rack bar 7l, engaging the sheave 92 with the shaft 79, and releasing the hools 98. Tith these changes, the entire method of printing is changed, permitting of an increased length of exposure beyond what could be provided by the moving lamp, without requiring any change whatever in the circuit-breaking mechanism. And it will be obvious, that a reversal of these operations will return the lamp to a position where its operation will be limited to that of a moving lamp.

The specific construction of the mechanism for including the lamp cables within the lamp circuit is not claimed herein, as the same forms the subject-matter of a divisional application hereof, filed July 27, 1909, Serial No. 509,874.

rlhe various operations are believed to have been indicated with sufficient clearness.

As will be seen, the entire apparatus supported solely by the frame formed of the bars 20, said bars, being rigidly connected at their top, forming supports which need not be adjusted relatively to any portions of the remaining structures after the latter have been secured thereon. Hence, it will be readily understood that the apparatus may be assembled and tested before leaving the manufactory, and boxed and placed in condition for shipment in its exact operative positions, the lamp being connected up and boxed or braced so as to prevent swinging movement during shipping, however, remaining within the crate or box used for the entire apparatus. Then the apparatus is delivered. to the consignee, it will be necessary only for him to remove the box or crating, and apply the circuit connections to the automatic switch, to place the apparatus vin condition for operation. In other words, the apparatus is one which is wholly selfcontained.

The advantages of the present invention are many, and include the following in addition to those heretofore pointed out: The ability to provide for either a moving or a stationary exposure without substitution ot parts and by a simple manipulation of por-I tions of the operating mechanism; vthe use of exposure timing means common to either form of operating, and at the same time using the tripping element for the circuit breaker as a movement-liiniting member for the lamp, the provision of an auxiliary power device or motor for operating the timing mechanism, coniiectible with the operating elements without affecting the position or connections of any of the elements controlling the timing structure; the provision of a compact, durable and efficientlyoperating supporting structure for the lampcables, said structure being positively movable and at the same time insulated against all liability of leakage of current; the provision of circuit connections to the lampcables and to form the automatic switch which insures a continuous passage of the current; the use of the lamp-cables for the passage of the current as well as a support for the lamp; the prevention of a rotary swinging of the lamp to eliminate liability ot affecting the print; and the accurate alining ot the blind portions of the lamp and printing trame.

Having thus described my invention and pointing out one mode t'or carrjviiig the same into effect, but vvithout indicating all of the forms vvhich might be used for the purpose, and reserving all my rights to such changes and modifications therein as may be desired or necessary so tar as thej7 ma7 tall vvithin the spirit and scope ot' mv invention, what l claim as nevv is;-

1. In a blue-printing apparatus, a printing trame, means lor providing a moving or a stationar)7 print exposure to said t'rame. and means t'or controlling the time-length of exposure.

2. ln a blue-printing` apparatus, a printingl lrame, a source of light, and means for providing a controllable moving or a stationaiv print-exposure to said frame during a predetermined period.

Pl. ln a blue-printing apparatus. a printing trame, a source ot light, and means for providing a controlled moving or a stationar v print-exposure to the trame, said means including a timing mechanism for controlling the length of the exposure.

-l-, ln a blue-printing apparatus, a printing trame` a source ot light, and means tor providing a controlled moving or a stationar v print-exposure to the frame, said means including a timing mechanism tor controlling the length of the exposure, said timing mechanism controllingl the rate ol" movement during the moving print-exposure.

ln a blue-printing` apparatus, a printing frame, a lamp, means for controlling the time-length ot the emission of light ravs trom said lamp, and means for providing a controlled movement or a stationary position to the lamp relative to said trame during the period of light-ray emission.

G. In a blue-printing apparatus, a printing trame. a lamp, means for controlling the time-length of the emission oi light rays trom said lamp, and means for providing a controlled movement or a stationary position to the lamp relative to said traine during the period of light-ray emission, said time-length controlling means regulating the rate ot movement` ot the lamp during its controlled movement.

T. ln a blue-printing apparatus, a printing trame, a lamp, means for controlling the time-length ot the emission ot light ravs from said lamp, and means for providing a controlled movement or a stationarv position to the lamp relative to said trame during` the period ot' light-ra)v emission, said time-length controlling means and said lamp 1novement-imparting means having a common motive povver.

S. In a blue-printing apparatus, a printing trame, a lamp, means for controlling the time-length ot the emission ot light ralvs from said lamp, and means tor providing a controlled movement or a stationarv position to the lamp relative to said trame during the period oi light-rav emission, said time-length controlling means and said lamp movement-imparting means havinga common motive povver, indei'iendent motive povver being provided for the time-length controlling means vvhen the lamp is in stationary position during the light-ray emission.

9. ln a blue-printing apparatus, a printing trame, an electric lamp, a lamp-circuit, an automatic svvitch in said circuit, means for controllablv moving said lamp relative to the printing trame, and controllable means for breaking the circuit aty a predetermined period, said latter means being adjustabl)v connected to and operating ivith the lampmovement controlling` means, said svvitch and the circuit-tweaking means cooperating to limit the movement of the lamp when the circuit has been broken.

10. In a blue-printing apparatus, a printing frame, an electric lamp, mans for controlling` the circuit of said lamp to provide periods of light-exposure of thc lamp, and means connected to said circuit controlling means for controlling movements otl the lamp relative vto the printing frame, said latter means being disengageable from the circuit-controlling means to permit independent movement of the lamp` ll. In a blue-printing apparatus, a printing trame, an electric lamp, means for controlling the circuit ot said lamp to provide periods of light-exposure of the lamp, means connected to said circuit controlling means for controlling movements ot the lamp relative to the printing frame, said lattermeans being disengageable from the circuit-controlling means to permit independent movement ot' the lamp, and av stop for controlling the length ot independent movement of the lamp.

l2. In a blue-printing apparatus, a printing frame, an electric lamp, means for controlling the circuit ot said lamp to provide periods ot light-exposures ot' the lamp, means connected to said circuit controlling means for controlling movements ot the lamp relative to the printing frame, said latter means being disengageable from the circuit-controlling means to permit independent movementl otl the lamp, and a stop for controlling the length of inde vendent movement of the lamp, said stop being adjustabl;7 carried b v the disengageable means.

13. In a blue-printing apparatus, a printing trame, an electric lamp, means for controlling the circuit of said lamp to provide periods of light-exposure of the lamp, and means connected to said circuit controlling means tor controlling movements ot' the lamp relative to the printing frame, said latter means being disengageable from the circuit-controlling means to permit independent movement ot the lamp without ait'- fecting movements oit the circuit-controlling means.

14. In a blue-printing apparatus, a printing frame, an electric lamp, means tor controlling the circuit of said lamp to provide periods of light-exposure of the lamp, and means connected to said circuit controlling means :tor controlling movements of the lamp relative to the printing frame, said latter means being disengageable trom the circuit-controlling means to permit independent movement ot the lamp, said circuitcontrolling means being operative irrespective of the engagement or disengagement ot the disengageable means.

15. In a blue-printing apparatus, a printing-frame, an electric lamp movable relative to said printing trame, means for controlling the circuit of said lamp to provide periods of light-exposure of the lamp, said means being operable by movements of the lamp, and means independent of the lamp for imparting controlling movements to the circuit-controlling means when the lamp is held in stationary position.

16. In a blue-printing apparatus, a printing-frame, an electric lamp movable relative to said printing trame, means for controlling the circuit of said lamp to provide periods of light-exposure of the lamp of predetermined length, said means being operable by movements of the lamp, and means independent of the lamp for imparting controlling movements to the circuit-controlling means when the lamp is held in stationary position.

17. In a blue-printing apparatus, a printing trame, an electric lamp, a cable support for said lamp, a timing mechanism, and connections between the cable support and said timing mechanism to control the movement ot the lamp relative to said frame, said connections being disengageable to permit independent movements of the lamp.

18. In a blue-printing apparatus, a printing frame, an electric lamp, a cable support for said lamp, a timing mechanism, and connections between the cable support and said timing mechanism to control the movement of the lamp relative to said trame, said connections being disengageable to permit independent movements oi' the lamp without affecting the movements of the timing mechanism.

19. In a blue-printing apparatus, a printing frame, an electric lamp, a cable support for said lamp, a timing mechanism, connections between the cable support and said timing mechanism to control the movement of the lamp relative to said t ame, said connections-being disengageable to permit independent movements of the lamp, and auxiliary means for operating the timing mechanism, said auxiliary means being operative when said connections are inoperative to control timed movements ot the lamp.

20. In a blue-printing apparatus, a printing frame, an electric lamp, a cable support for said lamp, a timing mechanism including a sleeve, and a connection between said sleeve and said cable support, whereby movement of the lamp in one direction will operate the timing mechanism, said connection being disengageable to permit independent movement ot the lamp in the same direction.

21. In a blue-printing apparatus, a printing trame, an electric lamp, a cable support for said lamp, a timing mechanism including a sleeve, and a connection between said sleeve and said cable support, whereby movement of the lamp in one direction will operate the timing mechanism, said connection being disengageable from said sleeve to permit independent movement of the lamp in the same direction.

22. In a blue-printing apparatus, a printing trame, an electric lamp, a cable support for said lamp, a timing mechanism including a sleeve, a connection between said sleeve and said cable support, whereby movement of the lamp in one direction will operate the timing mechanism, said connection being disengageable from said sleeve to permit independent movement of the lamp in the same direction, and means carried by the connection to limit the length of tree movement of the lamp.

23. In a blue-printing apparatus, a printing trame, an electric lamp, a cable support for said lamp, a timing mechanism including a sleeve, a connection between said sleeve and said cable support, whereby movement of the lamp in one direction will operate the timing mechanism, said connection being disengageable from said sleeve to permit independent movement ot the lamp in the same direction, and adjustable means carried by the connection for controlling the length of free movement of the lamp.

24. In a blue-printing apparatus, a printing frame, an electric lamp, a cable support for said lamp, a timing mechanism including a sleeve, a connection between said sleeve and said cable support, whereby movement of the lamp in one direction will operate the timing mechanism, said connection being disengageable from said sleeve to permit independent movement of the lamp in the same direction, and an adjustable stop carried by the connection tor controlling the length ot tree movement of the lamp.

25. In a blue-printing apparatus, a printing frame, an electric lamp, a cable support for said lamp, a timing mechanism including a sleeve, a connection between said sleeve and said cable support, whereby movement of the lamp in one direction will operate the timing mechanism, said connection being disengageable from said sleeve to permit independent movement of the lamp in the same direction, and an adjustable stop carried by the connection for controlling the length of free movement of the lamp, said stop being positionable to render it inoperative when said connection is in engaged position.

Q6. In a blue-printing apparatus, a printing trame, an electric lamp, a iotary cable support for said lamp, said support carrying circuit connections to provide a continuous operative current path between the cables and the lamp circuit, an automatic switch within the lamp circuit, a timing mechanism for controlling the movements otl said switch to break the circuit, and a con nection between said support and said mechanism to provide movements of the latter during movements of the support, said connection being diseiigageable from the timing mechanism.

9.7. In a blue-printing apparatus, a printing frame, an electric lamp, a rotary cable support for said lamp, said support carrying circuit connections to provide a continuous operative current path between the cables and the lamp circuit, an automatic switch within the lamp circuit, a timing mechanism for controlling the movements ot' said switch to break the circuit, and a connection between said support and said mechanism to provide movements of the latter during movements of the support, said connection being disengageable from the timing mechanism without aecting the lamp circuit or the circuit-breaking movements of the timing' mechanism,

2S. In a blue-printing apparatus, a printing frame, an elect-rie lamp, a cable support for said lamp, a timing mechanism, a connection between said support and the timing mechanism to control the movements and light-exposure of the lamp, said connections being disengageable to permit free movements of the lamp, and independent mechanism eoperating with the timing mechanism for operating the latter upon disengagement of said connections.

29. In a blue-printing apparatus, a printing frame, an elect-ric lamp, a cable support for said lamp, a timing mechanism including a rack-bar and sleeve, a connection between said sleeve and the cable support, whereby movements of the support will be controlled by said timing mechanism, said connections being disengageable, and independent means coperating with said rackbar for imparting movements to the timing mechanism independent ot movements of the support.

30. In a blue-piiiiting apparatus, a printing frame, an electric lamp, a cable support for said lamp, a timing mechanism including a rack-bar and sleeve. a connection between said sleeve and the cable support, whereby movements ot the support will be controlled by said timing mechanism, said connections being` disengageable, and independent means coperating with said rackbar for imparting movements to the timing mechanism independent of movements of the support, said independent means including a normally-inactive motor.

3l. In a blue-printing apparatus, a printing frame, an electric lamp, a cable support for said lamp, a timing mechanism including a rack-bar and sleeve, a connection between said sleeve and the cable support, whereby movements of the support will be controlled by said timing mechanism, said connections being disengageable, and independent means cooperating with said rackbar for imparting movements to the timing mechanism independent of movements of the support, said independent means including a normally-inactive weight.

32. In a blue-printing apparatus, a printing trame having predetermined blind 7 portions, a support for said frame, an electric lamp suspended from said support and operable within said frame, said lamp being normally suspended to provide an alinement of the blind light-zone of the lamp and the blind portions of the frame, means for providing such lamp-suspension, and means carried by the lamp -suspending means for preventing a rotary swinging movement o" the lamp to disturb said alinement.

33. In a blue-printing apparatus, a printing frame having predetermined blind 7 portions, a support for said trame, an electric lamp suspended from said support and opeiable within said frame, said lamp being normally suspended to provide an alineinent ot the blind light-Zone of the lamp and the blind portions of the frame, means for providing such lamp-suspension, and means carried by the lamp-suspending means for prevent-iiig a rotary swinging movement of the lamp to disturb said alineineiit, said means including a member engaging the supporting cables of the lamp and the lamp.

In a blue-printing apparatus, a printing frame having predetermined blind 7 portions, a support for said frame, an electric lamp suspended from said support and operable within said frame, said lamp being normally suspended to provide an alineinent of the blind portions of the frame, means for preventing a rotary swinging movement of the lamp to disturb said aliiieinent, said means including a member engaging in the supporting cables of the lamp and the lamp, and comprising a. bar having clamping ends, and cable-receiving split bushings mounted within said ends, said bushings being clamped to the cables by the Clamping of the ends of the bar.

35. In a blue-printing apparatus, a lamp, a printing frame, mechanism for providing controlled movements and print-exposure of the lamp, and a supporting frame, said latter frame forming the sole support for eaeh of said ren'iaining` elements.

36. In. a blue-printing` apparatus, a lamp, a printing frame, mechanism for providing controlled movements and print-exposure of the lamp, and a supperting` iframe, the remaining elements being positioned on said supporting trame.

37. In a blue-printing apparatus, a lamp, a printing frame, mechanism for providing controlled movements and print-exposure of the lamp, and a supporting frame, said ,latter frame forming the sole support for eaeh of said remaining elements, said remaining elements being positioned on said supporting` frame and connected therewith in a manner to permit movements of the supporting frame Without affecting the position of the remaining elements relatively thereto.

38, In a blue-printing apparatus, a printing frame, an eleetrie lamp, a Cable support for said lamp, a timingv mechanism, and Connections between the cable support and said timing mechanism to Control the movement of the lamp relative to said frame, said connections being disengageable, means being provided to adjustahly limit the length of such independent movements.

In testimony whereof I have affixed my signature in the presence of t-Wo witnesses.

REINHOLD HERMAN.

lVitnesses CARL HERMAN, ERNEST PAYNE. 

